.sound-toggle {
    position: relative;
    width: 45px;
    height: 45px;
    background: rgba(45, 108, 112, 0.2);
    border: 2px solid var(--line_color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    overflow: hidden;
    z-index: 10;
}
.sound-toggle::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent, rgba(193, 239, 251, 0.1), transparent);
    transform: translateX(-100%);
    transition: transform 0.5s ease;
}
.sound-toggle:hover::before {transform: translateX(100%);}
.sound-toggle:hover {
    background: rgba(45, 108, 112, 0.4);
    border-color: var(--txt_color);
    box-shadow: 0 0 20px rgba(193, 239, 251, 0.3);
    transform: scale(1.05);
}

.sound-toggle:active {transform: scale(0.95);}
.sound-toggle i {
    position: absolute;
    font-size: 1.3rem;
    color: var(--txt_color);
    transition: all 0.4s ease;
    text-shadow: 0 0 8px rgba(193, 239, 251, 0.5);
}

/* Sound OFF icon (default - görünür) */
.sound-toggle .sound-off {
    opacity: 1;
    transform: scale(1) rotate(0deg);
    color: var(--txt_color);
}

/* Sound ON icon (gizli) */
.sound-toggle .sound-on {
    opacity: 0;
    transform: scale(0) rotate(-180deg);
}
/* Active state - Sound ON */
.sound-toggle.active .sound-off {
    opacity: 0;
    transform: scale(0) rotate(180deg);
}
.sound-toggle.active .sound-on {
    opacity: 1;
    transform: scale(1) rotate(0deg);
    color: var(--txt_color);
}
/* Hover effect */
.sound-toggle:hover i {text-shadow: 0 0 15px rgba(193, 239, 251, 0.8);}
/* Active button effect */
.sound-toggle.active {
    background: rgba(193, 239, 251, 0.15);
    border-color: var(--txt_color);
    box-shadow: 0 0 15px rgba(193, 239, 251, 0.4),
        inset 0 0 10px rgba(193, 239, 251, 0.1);
}

/* Pulse animation when active */
.sound-toggle.active::after {
    content: '';
    position: absolute;
    inset: -5px;
    border: 2px solid var(--txt_color);
    border-radius: 50%;
    opacity: 0;
    animation: soundPulse 2s ease-in-out infinite;
}

@keyframes soundPulse {
    0% {
        transform: scale(0.8);
        opacity: 0;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.5;
    }
    100% {
        transform: scale(1.3);
        opacity: 0;
    }
}

/* Mobile responsive */
@media (max-width: 767px) {
    .navlinks {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    .logo { order: 1;}
    .sound-toggle {
        width: 35px;
        height: 35px;
        order: 2;
        margin: 0 auto;
    }
    .menuBar {order: 3;}
    .sound-toggle i { font-size: 1rem;}
}